Pit-flask for castings



E. FRIES.

PIT FLASK FOR CAST-1N6.

APPLICATION FILED OCT. :1, 1919.

Patented June 29, 1920.

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E. FRIES. PIT FLASK FOR CASTING.

APPLICATION FILED OCT. H. 1919.

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E. FRIES.

PIT FLASK FOR CASTING.

APPLICATION FILED OCT. 11,1919.

UNITED STATES PATENT OFFICE.

. EDWARD FRIES, OF MOORES, PENNSYLVANIA.

PIT-FLASK Fort CASTINGS.

Specification of Letters Patent. Patented J 11118 29, 192() Applicationfiled October 11, 1919. Serial No. 330,076.

To aZZ whom it may 00mm..- I

Be it known that I, EDWA D F RIES, a citizen of the United States, and aresident of Moores, county of Delaware, State of Pennsylvania, haveinvented certain Improvements in Pit-Flasks for Uastings, of which thefollowing is a specification. My invention relates to certainimprovements in flasks used in the production of large castings,

One object of my invention is to provide a flask which can bepermanently located in a pit and in which the mold can be built up priorto casting.

I A further object of the invention is to -make the walls of the flaskmovable and adjustable to accommodate molds of different sizes and tomake the bottom' supports of the flask adjustable for the same purpose.

A still further object of the invention is to construct a flask whichcan be ermanently located in a pit inv the molding" oor so as to avoidthe necessity of having a number of duplicate, flasks and to economizein floor space heretofore used in storing unused flasks. Y I i I cAnother object ofthe' invention is to prevent accidents due to thebreaking of a flask, or the parts of a flask, by allowing the moltenmetal to flow into a pit rather than over the molding floor. I

Still another object of the invention is to provide a flask in which abottom plate having a mold thereon can be inserted in the flask and canbe withdrawn therefrom with the casting. I r

In the accompanying drawings: I I

Figure 1 is a perspective view of my improved flask located within thepit and showing the cope located on the flask and the parts ready forpouring; I I I Fig. 2 is a plan view of the flask;

Fig. 3 is an end View; r I

Fig. 4 is a side view; 1 I

Fig. 5 is a perspective view of the mold mounted on the bottomplate; I

Fig. 6 is a perspective view showing the arrangement of the sections ofthe mold in the flask; and r Fig. 7 is a sectional view showing theflask within the pit and the cope located above the flask ready forpouring.

1 is a pit, of any depth desired, and located in this pit is the flask 2consisting of end members 3 and side members 4; and 4. The side member 1is fixed and the side member .tis adjustable toward and from the member4. In the present instance, the side member 1 has extensions 5 whichoverlap the recessed portions 6 of the end members 3.

In order to hold theside member 4 in the.

position to which it is adjusted a series of holes 7 are made in eachend member and pins 8 are driven in these holes. When the mold is inposition, wedges 9 are drivenin the space between the pins and the sidemembers so as to lock the mold firmly in position. The lower end of theside member may be held in any manner desirable and, in some instances,duplicate sets of holes for the pins may be formed in the end members,as shown by dotted lines in Fig. 2.

Located in the flask is a bottom board 10 supported onbars 11, whichextend through openings 12 in the end members of the flask.

These openings '12 are located so that the bottom board can be elevatedto the height desired, according to thesize of the mold, thelpartingbeing at the upper edge of the flas 13 are a series of openings m'theupper portionof the flask, in the present instance cruciform in shape,to allow for the escape of gas from the mold during the pouringoperation. In the present instance, the flask is of sucha size as toaccommodate the mold of a locomotive cylinder saddle, in which iscontained the cylinder, the cylindrical valve and the passages leadingto and from the cylinder and the valve.

I11 Fig. 6, I have illustrated the flask with the sectional mold locatedtherein showing the detachable walls a of the mold, the section .6forming the cylindrical valve chamber and the ports, the end membersbeing recessed to form one-half of the cylinder, the other half beingformed inthe mold car- .ried by the cope, as illustrated in Fig. 7.

The flask is adjusted according to the mold and when once adjusted amold can be assembled within the flask and sand rammed between the wallsof the flask and the mold, then the cope is placed in position and thepouring head is also located in position, as in Fig. 1, then the metalis poured into the flask and in time the casting can be removed with thebottom plate by first removing the cope and withdrawing the mold andcasting on the bottom plate, leaving the flask within the pit. The pitis then cleaned out to receive another bottom plate with another moldassembled thereon.

the bottom plate with the casting after the wedges retaining the sidemembers have been removed. 7 o

By this arrangement, a single flask can be usedfor any number of moldswithout removing the flask from the pit. This prevents theaccumulationof a large number of flasks heretofore used in foundries where largecastings are made as, in the ordinary method, the flask was removed eachtime a casting was made, and another flask placed in position. Theflasks, after the castings were removed, were piled either on the insideor on the outside ofthe building, occupying valuable space which is nowused more advantageously.

Heretofore, particularly in casting cylindersof locomotives, eachspecial size of cylinder hadito have a flask of a corresponding size.This necessitated carrying a large number of flasks in storage, orproviding special flasksflwhen cylinders of a special size were to bemade.

.By my improvement, I am enabled to make a single fixed flask, which canbe adjusted to fit molds of different dimensions. Furthermore, whereintricate molds are used, the several cores can be assembled on the basemold, being supported only by the bottom plates, thus insuring moreaccurate castings than where the mold and the cores are assembled withina drag section of a flask.

While I have shown one side member arranged to be adjusted, it will beunderstood that the other side member may be adjusted if foundnecessary, and while I have shown pins and wedges for holding theadjustable side members in position, other means may be used, ifdesirable.

I claim:

1. The combination in a flask adapted to be. located in a pit, of-fixed'end walls and side walls located between the end walls, one

of said side walls being adjustable; and an adjustable bottom locatedwithin the flask and supportingithe mold.

2. The combination of a flask adapted to be permanently located withinthe pit and having end Walls and side walls, one Wall beingadjustabletoward and from the other wall; a bottom plate carrying thebottomsection ofthe mo1d,the parting being at the upper edge of said mold; acope having the upper section of the mold formed therein andplaced onthe lower section; and a pouring section located on the cope.

'3. The combination in a flask adapted to be permanently located in apit, of a fixed side wall and end walls recessed atthe upper end; amovable side wall having extensions adapted to the recessed portions ofthe end walls; a series of holes in each "end of each end wall; pinsadapted to theho'les; andwedfges between the pins and themovable sidewall so as to hold the said side-wall in the position to which it isadjusted. I

4. The combination of a fia'sk *having end and side walls, said flaskbeing permanently located in a pit, the upper portion of the flaskextending above the pit, said flask hav- 7 ing a movable side wall;means for holding the saidside wall durin the castingopeiiation'; abottom plate a" apted to the flask; means for supporting the bottomplate in the flask, the bottom moldbeing carried'by the bottom plate andextending to a point below the parting line of the flask; detachablemold sectionsmounted orn'fthebottom mold so as to bring the mold up tothe part ing line; and a cope mounted on the flask and carrying thebalance of'themold."

5. The combination of 'a flask; a pit in the molding floor in which theflask is located, the flask extending above'the floor; a series ofitholes in the lower portion of each end wall of the flask; bars locatedin the holes; and a bottom plate located within the flask andsupportedby the bars.

6. The combination of a fixed flaskhav-ing end and side members; aremovable bottom plate "located within the flask; means for supportingsaid plate and slings attached to the bottom plate at each-side oi? themold,-

said slings, before the metal is cast, being

